E1 Datasheet, PDF (29/50 Pages) Renesas Technology Corp – E1/E20 Emulator

E1/E20 Emulator
Designing the User System
2.5.3. About the EMLE Pin (FINE Interface)
Connection of the EMLE pin to the connector is optional.
When debugging with the E1 or E20 emulator, or when using the MCU without the emulator, set the EMLE signal
to the low level.
When the EMLE pins of the E1 or E20 emulator and the MCU are connected to each other, the E1 or E20 emulator
operates the EMLE pin. Therefore, pull the levels on the EMLE pin down on the user system. When the EMLE
pins of the E1 or E20 emulator and the MCU are not connected (e.g. when only FINE Interface Connection is
used), pull the levels on the EMLE down at 4.7 kΩ to 10 kΩ on the user system.
If the MCU does not have an EMLE pin, it is not necessary to connect it to the emulator connector. In this case,
only FINE Interface Connection is available.
[When connected to the E1 or E20 emulator]
Connector
EMLE
MCU
EMLE
4.7kΩ to 10 kΩ
[When not connected to the E1 or E20 emulator]
Connector
MCU
EMLE
EMLE
4.7kΩ to 10 kΩ
Figure 2.18 Connection of the EMLE Pin (FINE Interface)
Do not install capacitors, series resistors, or filters on signal lines; if attempted, correct communication may not
be established.
R20UT0399EJ0700 Rev.7.00
Feb 01, 2014
Page 29 of 50